Words that begin with the R sound http://www.quia.com/jg/62500.html
Words with the R sound in the MIDDLE of words http://www.quia.com/jg/334091.html
More words with the R sound in the MIDDLE of words http://www.quia.com/hm/16905.html
Words with the R sound at the END of words http://www.quia.com/jg/331566.html
More words with the R sound at the END of words http://www.quia.com/jg/333991.html
The Jumbo Articulation Book of Sounds - ask your Speech teacher for this book